INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes [ 1003.440898] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.1.23' (ECDSA) to the list of known hosts. [ 1010.222414] random: sshd: uninitialized urandom read (32 bytes read) [ 1010.311249] audit: type=1400 audit(1563907780.153:7): avc: denied { map } for pid=1948 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2019/07/23 18:49:41 parsed 1 programs [ 1011.352079] audit: type=1400 audit(1563907781.193:8): avc: denied { map } for pid=1948 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=5035 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 [ 1011.813123] random: cc1: uninitialized urandom read (8 bytes read) 2019/07/23 18:49:43 executed programs: 0 [ 1013.247910] audit: type=1400 audit(1563907783.083:9): avc: denied { map } for pid=1948 comm="syz-execprog" path="/root/syzkaller-shm251017984" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 2019/07/23 18:49:48 executed programs: 64 2019/07/23 18:49:53 executed programs: 186 2019/07/23 18:49:58 executed programs: 304 2019/07/23 18:50:03 executed programs: 396 2019/07/23 18:50:08 executed programs: 503 2019/07/23 18:50:13 executed programs: 613 2019/07/23 18:50:18 executed programs: 729 2019/07/23 18:50:23 executed programs: 846 2019/07/23 18:50:28 executed programs: 961 2019/07/23 18:50:33 executed programs: 1076 2019/07/23 18:50:38 executed programs: 1188 2019/07/23 18:50:43 executed programs: 1296 2019/07/23 18:50:48 executed programs: 1412 2019/07/23 18:50:53 executed programs: 1524 2019/07/23 18:50:58 executed programs: 1637 2019/07/23 18:51:03 executed programs: 1745 2019/07/23 18:51:08 executed programs: 1864 2019/07/23 18:51:13 executed programs: 1980 2019/07/23 18:51:18 executed programs: 2100 2019/07/23 18:51:23 executed programs: 2217 2019/07/23 18:51:28 executed programs: 2332 2019/07/23 18:51:33 executed programs: 2456 2019/07/23 18:51:38 executed programs: 2563 2019/07/23 18:51:43 executed programs: 2667 2019/07/23 18:51:48 executed programs: 2779 2019/07/23 18:51:53 executed programs: 2894 2019/07/23 18:51:58 executed programs: 3007 2019/07/23 18:52:03 executed programs: 3126 2019/07/23 18:52:08 executed programs: 3244 2019/07/23 18:52:13 executed programs: 3366 2019/07/23 18:52:18 executed programs: 3480 2019/07/23 18:52:23 executed programs: 3577 2019/07/23 18:52:28 executed programs: 3673 2019/07/23 18:52:33 executed programs: 3782 2019/07/23 18:52:38 executed programs: 3876 2019/07/23 18:52:43 executed programs: 3987 2019/07/23 18:52:48 executed programs: 4072 2019/07/23 18:52:53 executed programs: 4150 2019/07/23 18:52:58 executed programs: 4242 2019/07/23 18:53:03 executed programs: 4348 2019/07/23 18:53:08 executed programs: 4455 2019/07/23 18:53:13 executed programs: 4558 2019/07/23 18:53:18 executed programs: 4667 2019/07/23 18:53:23 executed programs: 4775 2019/07/23 18:53:29 executed programs: 4883 2019/07/23 18:53:34 executed programs: 4986 INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes [ 1431.520099] INFO: task syz-executor.0:26390 blocked for more than 140 seconds. [ 1431.528777] Not tainted 4.14.134+ #18 [ 1431.540221] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1431.548229] syz-executor.0 D28808 26390 1964 0x80000000 [ 1431.554558] Call Trace: [ 1431.557266] ? __schedule+0x88c/0x1f80 [ 1431.561654] ? __sched_text_start+0x8/0x8 [ 1431.565815] ? mark_held_locks+0xa6/0xf0 [ 1431.569919] ? rwsem_down_read_failed+0x22a/0x3c0 [ 1431.575222] schedule+0x92/0x1c0 [ 1431.578595] rwsem_down_read_failed+0x22a/0x3c0 [ 1431.583591] ? rt_mutex_futex_unlock+0xe0/0xe0 [ 1431.588585] ? __might_fault+0x104/0x1b0 [ 1431.593121] ? SyS_futex+0x1c5/0x2c3 [ 1431.596839] ? SyS_futex+0x1cf/0x2c3 [ 1431.601164] ? do_futex+0x1980/0x1980 [ 1431.604959] call_rwsem_down_read_failed+0x14/0x30 [ 1431.609873] down_read+0x45/0xa0 [ 1431.613675] ? do_exit+0x575/0x2a20 [ 1431.617510] do_exit+0x575/0x2a20 [ 1431.621259] ? mm_update_next_owner+0x610/0x610 [ 1431.625915] ? do_group_exit+0x26b/0x2e0 [ 1431.630364] ? lock_downgrade+0x5d0/0x5d0 [ 1431.634511] ? kick_process+0xef/0x180 [ 1431.638402] ? _raw_spin_unlock_irq+0x24/0x50 [ 1431.643463] ? do_group_exit+0x100/0x2e0 [ 1431.647517] ? SyS_exit_group+0x19/0x20 [ 1431.651805] ? do_group_exit+0x2e0/0x2e0 [ 1431.655872] ? do_syscall_64+0x19b/0x520 [ 1431.659940] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1431.665843] INFO: task syz-executor.0:26392 blocked for more than 140 seconds. [ 1431.673254] Not tainted 4.14.134+ #18 [ 1431.677828] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1431.686411] syz-executor.0 D28912 26392 1964 0x80000000 [ 1431.692061] Call Trace: [ 1431.694635] ? __schedule+0x88c/0x1f80 [ 1431.698613] ? __sched_text_start+0x8/0x8 [ 1431.703100] ? mark_held_locks+0xa6/0xf0 [ 1431.707205] ? rwsem_down_read_failed+0x22a/0x3c0 [ 1431.712477] schedule+0x92/0x1c0 [ 1431.715983] rwsem_down_read_failed+0x22a/0x3c0 [ 1431.720957] ? rt_mutex_futex_unlock+0xe0/0xe0 [ 1431.725551] ? __might_fault+0x104/0x1b0 [ 1431.729616] ? SyS_futex+0x1c5/0x2c3 [ 1431.733662] ? SyS_futex+0x1cf/0x2c3 [ 1431.737369] ? do_futex+0x1980/0x1980 [ 1431.741327] call_rwsem_down_read_failed+0x14/0x30 [ 1431.746242] down_read+0x45/0xa0 [ 1431.749740] ? do_exit+0x575/0x2a20 [ 1431.753702] do_exit+0x575/0x2a20 [ 1431.757172] ? futex_wake+0x15b/0x440 [ 1431.761451] ? mm_update_next_owner+0x610/0x610 [ 1431.766178] ? get_signal+0x334/0x1cc0 [ 1431.770489] ? lock_downgrade+0x5d0/0x5d0 [ 1431.774648] ? lock_acquire+0x12b/0x360 [ 1431.778622] ? get_signal+0x1e7/0x1cc0 [ 1431.783036] ? do_group_exit+0x100/0x2e0 [ 1431.787093] ? get_signal+0x39f/0x1cc0 [ 1431.791293] ? trace_hardirqs_on+0x10/0x10 [ 1431.795537] ? do_signal+0x96/0x15d0 [ 1431.799252] ? get_unused_fd_flags+0xc0/0xc0 [ 1431.804037] ? __might_fault+0x104/0x1b0 [ 1431.808100] ? setup_sigcontext+0x810/0x810 [ 1431.813185] ? lock_acquire+0x12b/0x360 [ 1431.817172] ? __might_fault+0xd4/0x1b0 [ 1431.821558] ? _copy_to_user+0x82/0xd0 [ 1431.825465] ? SyS_futex+0x1c5/0x2c3 [ 1431.829221] ? SyS_futex+0x1cf/0x2c3 [ 1431.833240] ? do_futex+0x1980/0x1980 [ 1431.837159] ? exit_to_usermode_loop+0xcd/0x160 [ 1431.842349] ? exit_to_usermode_loop+0x11d/0x160 [ 1431.847124] ? do_syscall_64+0x3a3/0x520 [ 1431.851491] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1431.856959] [ 1431.856959] Showing all locks held in the system: [ 1431.863647] 1 lock held by khungtaskd/23: [ 1431.867825] #0: (tasklist_lock){.+.+}, at: [< (ptrval)>] debug_show_all_locks+0x7c/0x21a [ 1431.877014] 2 locks held by getty/1759: [ 1431.880988] #0: (&tty->ldisc_sem){++++}, at: [< (ptrval)>] tty_ldisc_ref_wait+0x22/0x80 [ 1431.889921] #1: (&ldata->atomic_read_lock){+.+.}, at: [< (ptrval)>] n_tty_read+0x1f7/0x1700 [ 1431.900030] 1 lock held by syz-executor.0/26390: [ 1431.905046] #0: (&mm->mmap_sem){++++}, at: [< (ptrval)>] do_exit+0x575/0x2a20 [ 1431.913352] 1 lock held by syz-executor.0/26392: [ 1431.918182] #0: (&mm->mmap_sem){++++}, at: [< (ptrval)>] do_exit+0x575/0x2a20 [ 1431.926304] [ 1431.928039] ============================================= [ 1431.928039] [ 1431.935640] NMI backtrace for cpu 0 [ 1431.939452] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.134+ #18 [ 1431.946529] Call Trace: [ 1431.949385] dump_stack+0xca/0x134 [ 1431.953036] ? irq_force_complete_move+0x2c1/0x2e5 [ 1431.957968] nmi_cpu_backtrace.cold+0x47/0x86 [ 1431.962466] ? irq_force_complete_move.cold+0x7b/0x7b [ 1431.967739] ? nmi_trigger_cpumask_backtrace+0x119/0x147 [ 1431.973192] ? watchdog+0x629/0xbe0 [ 1431.976825] ? reset_hung_task_detector+0x30/0x30 [ 1431.981666] ? kthread+0x31f/0x430 [ 1431.985246] ? kthread_create_on_node+0xf0/0xf0 [ 1431.989963] ? ret_from_fork+0x3a/0x50 [ 1431.994099] Sending NMI from CPU 0 to CPUs 1: [ 1431.998825] NMI backtrace for cpu 1 [ 1431.998828] CPU: 1 PID: 26393 Comm: syz-executor.0 Not tainted 4.14.134+ #18 [ 1431.998830] task: (ptrval) task.stack: (ptrval) [ 1431.998831] RIP: 0010:__lock_acquire+0x1/0x42e0 [ 1431.998833] RSP: 0018:ffff8881c1467a58 EFLAGS: 00000046 [ 1431.998837] RAX: 0000000000000000 RBX: ffff8881c4e42f00 RCX: 0000000000000000 [ 1431.998839] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881c9189440 [ 1431.998841] RBP: ffff8881c9189440 R08: 0000000000000001 R09: 0000000000000000 [ 1431.998843] R10: fffffbfff4445941 R11: ffffffffa222ca0b R12: 0000000000000000 [ 1431.998845] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 1431.998847] FS: 00007f43142ec700(0000) GS:ffff8881dbb00000(0000) knlGS:0000000000000000 [ 1431.998849] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1431.998851] CR2: 0000000000b7c308 CR3: 00000001c76d0005 CR4: 00000000001606a0 [ 1431.998854] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1431.998856] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1431.998857] Call Trace: [ 1431.998858] lock_acquire+0x12b/0x360 [ 1431.998860] ? perf_mmap+0x50d/0x1480 [ 1431.998861] ? perf_mmap+0x50d/0x1480 [ 1431.998863] __mutex_lock+0xf7/0x13e0 [ 1431.998864] ? perf_mmap+0x50d/0x1480 [ 1431.998865] ? perf_mmap+0x50d/0x1480 [ 1431.998867] ? lock_downgrade+0x5d0/0x5d0 [ 1431.998868] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1431.998870] ? __mutex_unlock_slowpath+0xff/0x690 [ 1431.998872] ? wait_for_completion_io+0x10/0x10 [ 1431.998873] ? perf_mmap+0x50d/0x1480 [ 1431.998875] perf_mmap+0x50d/0x1480 [ 1431.998876] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 1431.998878] mmap_region+0x7d9/0xfb0 [ 1431.998879] do_mmap+0x548/0xb80 [ 1431.998880] vm_mmap_pgoff+0x177/0x1c0 [ 1431.998882] ? vma_is_stack_for_current+0xb0/0xb0 [ 1431.998883] ? __fget+0x237/0x370 [ 1431.998885] SyS_mmap_pgoff+0xf4/0x1b0 [ 1431.998886] ? align_vdso_addr+0x60/0x60 [ 1431.998888] do_syscall_64+0x19b/0x520 [ 1431.998889] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1431.998890] Code: c7 a0 a5 45 a3 e8 50 f9 33 00 e9 87 fe ff ff 90 66 2e 0f 1f 84 00 00 00 00 00 48 8b 3c 24 e9 b7 fa ff ff 0f 1f 80 00 00 00 00 55 <48> 89 e5 41 57 49 89 ff 41 56 41 55 45 89 cd 41 54 41 89 cc 53 [ 1432.001905] Kernel panic - not syncing: hung_task: blocked tasks [ 1432.218298] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.134+ #18 [ 1432.224867] Call Trace: [ 1432.227452] dump_stack+0xca/0x134 [ 1432.230983] panic+0x1ea/0x3d3 [ 1432.234160] ? add_taint.cold+0x16/0x16 [ 1432.238112] ? irq_force_complete_move.cold+0x7b/0x7b [ 1432.243416] ? ___preempt_schedule+0x16/0x18 [ 1432.248011] watchdog+0x63a/0xbe0 [ 1432.251730] ? reset_hung_task_detector+0x30/0x30 [ 1432.256575] kthread+0x31f/0x430 [ 1432.259982] ? kthread_create_on_node+0xf0/0xf0 [ 1432.264661] ret_from_fork+0x3a/0x50 [ 1432.269443] Kernel Offset: 0x1ea00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 1432.280419] Rebooting in 86400 seconds..